docs: def send_command_response(self, source: list, command: str, *args, **kwargs):
          """
          Used in bot observer `on_next` method
          """
          args = json.dumps(args).encode('utf8')
          kwargs = json.dumps(kwargs).encode('utf8')
          frame = (*source, b'', command.encode('utf8'), args, kwargs)
          self.add_callback(self.command_socket.send_multipart, frame)